In this work, heat transfer and phase change of an argon crystal irradiated by a picosecond pulsed laser are investigated using molecular dynamics simulations. The result reveals no clear interface when phase change occurs, but a transition region where the crystal structure and the liquid structure co-exist. Superheating is observed during the melting and vaporizing processes. The solid-liquid interface is found to move with a velocity of hundreds of meters per second, and the vapor is ejected from the surface with a vapor front velocity of hundreds of meters per second.
Molecular Dynamics Simulation of Heat Transfer and Phase Change During Laser Material Interaction
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division March 30, 2001; revision received August 15, 2001. Associate Editor: D. Poulikakos.
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Wang , X., and Xu, X. (August 15, 2001). "Molecular Dynamics Simulation of Heat Transfer and Phase Change During Laser Material Interaction ." ASME. J. Heat Transfer. April 2002; 124(2): 265–274. https://doi.org/10.1115/1.1445289
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